Finding the Fourth Proportional to 1,455.30, 2,005.83 and 1,174.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,455.30 : 2,005.83 = 1,174.50 : x
2. Step 2: Convert to fraction form
   1,455.30/2,005.83 = 1,174.50/x
3. Step 3: Cross multiply
   1,455.30x = 2,005.83 × 1,174.50
4. Step 4: Simplify right side
   1,455.30x = 2,355,847.34
5. Step 5: Solve for x
   x = 2,355,847.34/1,455.30
6. Step 6: Final answer
   x = 1,618.81